Using the following program, identify the values of pid at lines A, B, C, and D. (Assume that the actual pids of the parent and child are 2600 and 2603, respectively. getpid() function returns the pid of the current process.) #include #include #include int main() pid_ t pid, pidl; * fork a child process */ pid = fork(); if (pid < 0) { * error occurred */ fprintf(stderr, "Fork Failed"); return 1; else if (pid =0) { * child process */ pidl = getpid(); printf"child: pid = %d",pid); /* A / printf"child: pidl = %d",pid1); /* B */ else { /* parent process */ pidl = getpid(); printf "parent: pid = %d",pid); /* C/ printf"parent: pid1 = %d",pid1); /*D*/ wait(NULL); return 0;